A5035946450- Polymer crystallization and properties
- biodegradable polymer synthesis and properties
- Polymer Nanocomposites and Properties
- Advanced Polymer Synthesis and Characterization
- Block Copolymer Self-Assembly
- Polymer composites and self-healing
- Crystallization and Solubility Studies
- Machine Learning in Materials Science
- Epoxy Resin Curing Processes
- Advanced Sensor and Energy Harvesting Materials
- Carbon dioxide utilization in catalysis
- Rheology and Fluid Dynamics Studies
- Additive Manufacturing and 3D Printing Technologies
University of the Basque Country
2023-2024
Tianjin University
2018-2024
Polymat
2023-2024
The incorporation of the secondary co-units may not only change kinetics and polymorphism crystallization but also affect melting behavior polymers, leading to memory effect even above equilibrium temperature. In this work, a series butene-1/norbornene random copolymers with 0–4.57 mol % steric norbornene (NBE) was synthesized using rac-ethyl(1-indenyl)2 zirconium dichloride as catalyst. melt crystallization, solid-phase transition, associated incomplete were studied differential scanning...
Random copolymerization is used to prepare new polymeric materials that combine the desirable properties of different homopolymers. The covalent bonds between comonomers enable miscibility and formation random copolymers with specific tailored for various applications. crystallization behavior intricate, encompassing up three modes, i.e., total comonomeric exclusion, isomorphism, isodimorphism. Isomorphism isodimorphism allow across entire composition range, resulting in unique potentially...
The random incorporation of comonomer units in isotactic polypropylene usually disrupts the chemical regularity macromolecular chain, thereby remarkably affecting crystallization and melting processes. We study influence a novel 4-(7-Octen-1-yl)-N,N-diphenylaniline (ODPA), concentration range 1.1–6.8 mol%, on self-nucleation behavior copolymers. Non-isothermal isothermal differential scanning calorimetry experiments demonstrated that kinetics are significantly retarded upon as ODPA co-units...
A strong memory effect has been identified in copolymers even above the equilibrium melting temperature, which accelerates subsequent recrystallization process. In this study, two series of novel 1-butene-based random were synthesized from comonomers: 4-phenyl-1-butene (PhB) and 4-anthryl-1-butene (AnB). PhB AnB introduced phenyl anthryl groups, respectively, into poly(1-butene) main chain. The occurrence evolution systematically explored presence these designed counits via differential...
In this work, poly(hexamethylene-ran-octamethylene carbonate) copolycarbonates were synthesized by melt polycondensation in a wide range of compositions. The copolymers displayed some the characteristic isodimorphic thermal behavior, such as crystallization for all compositions and pseudoeutectic behavior melting temperature (Tm) versus composition. point was located at 33 mol % poly(octamethylene (POC) content (i.e., corresponding to PH67O33C copolymer). Surprisingly, crystallinities (Xc)...
In this work, we investigate the crystallization behavior of two series novel aliphatic random copolycarbonates: poly(heptamethylene-ran-octamethylene carbonate) (PC7/PC8) and poly(octamethylene-ran-dodecamethylene (PC12/PC8). Both copolymers display apparent isodimorphic as they crystallize over entire composition range, exhibiting pseudoeutectic points at 45 76 mol % PC8 content for PC7/PC8 PC12/PC8, respectively. However, evolution in melting enthalpies (ΔHm) crystallinities (Xc) deviate...
Polymorphism is determined by the intrinsic molecular architecture designed via chemical synthesis and external flow stimuli applied in practical processing. In this work, flow-induced crystallization of butene-1/1,5-hexadiene random copolymers with 1.38–2.81 mol % cyclic methylene-1,3-cyclopentane (MCP) co-units was studied combination situ synchrotron wide-angle X-ray diffraction (WAXD) an extensional rheometer. The results show that incorporation unique MCP facilitates appearance trigonal...
This paper investigates the morphology and crystallization kinetics of polyethylene (PE) containing block copolymers, differing in number (di-vs. triblock copolymers) composition (ABA co-vs. ABC terpolymers). In these crystallizable PE is linked to amorphous poly(methyl methacrylate) (PMMA) and/or polystyrene (PS) blocks, for one terpolymer, poly(ethylene oxide) (PEO) was introduced as an additional block. The topological confinement exerted by covalent linkage other blocks (glassy PMMA PS,...
Even though the crystallization of long-chain branched polypropylene (LCB-PP) has been widely studied, role branches within isotactic (iPP) under shear-free conditions and a comprehensive understanding its isothermal kinetics over wide temperature (Tc) range are still lacking. The samples in this work were prepared by solution casting to eliminate any possible shear effects. Then, impact LCB on behavior iPP with varying content (LCB) was investigated entire window range. Polarized light...